25 MB WebP sample

A WebP file of exactly 26,214,400 bytes. It is a valid WebP image file, generated by this site. Compare its checksum and test it with the parser used by your application. Use it wherever you need a 25 MB sample, test or dummy WebP file.

sample-webp-25mb.webp

25 MB26,214,400 bytes

Download 25 MB WebP

Created in your browser in a few seconds, then checked against the SHA-256 checksum. No sign-up.

Type: image/webp
SHA-256: e48ef9541ff225d9611d5abf0e89ccc0e1ca87d73fa7c14d51195a64b517d071
Delivery: Created in your browser from static generator assets (how it works).

What is in this file

A 3396 × 2573 lossless test card coded with literal pixels only, so the size is set by the pixel count. 508 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.

Dimensions	3,396 × 2,573 px
Encoding	Lossless (VP8L)
Container	Extended (VP8X) with XMP metadata
Transparency	No
Animated	No

First bytes of the file

The first 64 bytes of sample-webp-25mb.webp as a hex dump: offset, bytes, then the same bytes as text. The WebP signature is 52 49 46 46 ?? ?? ?? ?? 57 45 42 50.

00000000  52 49 46 46 f8 ff 8f 01  57 45 42 50 56 50 38 58 |RIFF....WEBPVP8X|
00000010  0a 00 00 00 04 00 00 00  43 0d 00 0c 0a 00 56 50 |........C.....VP|
00000020  38 4c d6 fd 8f 01 2f 43  0d 83 02 80 40 00 00 00 |8L..../C....@...|
00000030  e2 ff ff ff ff ff ff ff  ff ff ff ff ff ff ff ff |................|

Preview

Creates the file in your browser and shows it here. Nothing large is downloaded from our server.

Where 25 MB matters

A 26,214,400-byte file, 25 MB in the binary units that operating systems and upload limits use. It is useful wherever a form, an API gateway, a storage quota or a mail server is configured with a limit of about this size.

All 25 MB sample files

Use this file for

Testing image resizing and memory use
Checking conversion to and from JPEG and PNG
Testing image CDNs and optimisation

Testing notes for WebP

Allow-lists written years ago often contain only JPEG, PNG and GIF, so WebP uploads fail on otherwise working forms.
Sniffers that read only the first four bytes see RIFF and may confuse WebP with WAV or AVI.

WebP format reference

Technical details

File name	sample-webp-25mb.webp
Format	WebP (WebP image)
Extension	.webp
MIME type	image/webp
Size	26,214,400 bytes (25 MB)
Kind	Binary
Signature	52 49 46 46 ?? ?? ?? ?? 57 45 42 50
SHA-256	e48ef9541ff225d9611d5abf0e89ccc0e1ca87d73fa7c14d51195a64b517d071
Created	2026-10-23
Validation	See the listed size and SHA-256. Small downloads are checked in the browser; verify streamed downloads manually. A hash match does not prove parser compatibility.
Preview	Available on this page
Source	Generated in your browser by this site's generator; not copied from elsewhere
Licence	Free to use, modify and redistribute (terms)
Category	Images

Check the stated structure and checksum against your application requirements. As with any download, scan the file with your own security tools before opening it. How files are made and checked

Verify your copy

This file is created in your browser, so it has no direct URL for curl or wget. The generator is designed to produce reproducible bytes. After saving, compare the checksum with the SHA-256 value above.

sha256sum sample-webp-25mb.webp     # Linux
shasum -a 256 sample-webp-25mb.webp # macOS

On Windows, run Get-FileHash sample-webp-25mb.webp -Algorithm SHA256 in PowerShell. For scripts and pipelines, save the file once and keep your own copy.

Related files

Questions about this file

Is this file exactly 25 MB?: Yes. It is 26,214,400 bytes, which is 25 MB in the binary units that operating systems and server limits use (1 KB = 1,024 bytes).
What is inside the 25 MB WebP file?: A 3396 × 2573 lossless test card coded with literal pixels only, so the size is set by the pixel count. 508 bytes of XMP metadata, most of it standard whitespace padding, bring the file to the exact size.
Are the sample WebP files lossy or lossless?: Lossless. They use the VP8L bitstream in an extended container with a small XMP metadata chunk.

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